CA2049127A1 - Mine control device - Google Patents
Mine control deviceInfo
- Publication number
- CA2049127A1 CA2049127A1 CA002049127A CA2049127A CA2049127A1 CA 2049127 A1 CA2049127 A1 CA 2049127A1 CA 002049127 A CA002049127 A CA 002049127A CA 2049127 A CA2049127 A CA 2049127A CA 2049127 A1 CA2049127 A1 CA 2049127A1
- Authority
- CA
- Canada
- Prior art keywords
- mine
- pin
- opening
- oscillator
- detonation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000035699 permeability Effects 0.000 claims abstract description 21
- 230000006870 function Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000005474 detonation Methods 0.000 claims description 17
- 230000007935 neutral effect Effects 0.000 claims description 4
- 239000002360 explosive Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 2
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 101150087426 Gnal gene Proteins 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C11/00—Electric fuzes
- F42C11/001—Electric circuits for fuzes characterised by the ammunition class or type
- F42C11/007—Electric circuits for fuzes characterised by the ammunition class or type for land mines
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Geophysics And Detection Of Objects (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An arrangement for programming the control of a mine including a pin (16) made of a material having a predeter-minable magnetic permeability and inserted into a blind bore-like opening in a mine housing (12). Via a coil disposed in the interior of the mine and surrounding the blind bore-like opening, a resonant output frequency (fR) of an oscillator, which frequency is a function of the permeability of the pin (16), is generated. If the detected resonant output frequen-cy (fR) corresponds to a frequency (fi) stored in a frequen-cy/address memory (42), an address (Ai) associated with this frequency (fi) is read out and fed to a read-only memory (44). This determined address (Ai) causes information (Ii) associated with this address (Ai) in the information memory (44) to be read out so that the action belonging to the respective information (Ii) is initiated within the mine.
An arrangement for programming the control of a mine including a pin (16) made of a material having a predeter-minable magnetic permeability and inserted into a blind bore-like opening in a mine housing (12). Via a coil disposed in the interior of the mine and surrounding the blind bore-like opening, a resonant output frequency (fR) of an oscillator, which frequency is a function of the permeability of the pin (16), is generated. If the detected resonant output frequen-cy (fR) corresponds to a frequency (fi) stored in a frequen-cy/address memory (42), an address (Ai) associated with this frequency (fi) is read out and fed to a read-only memory (44). This determined address (Ai) causes information (Ii) associated with this address (Ai) in the information memory (44) to be read out so that the action belonging to the respective information (Ii) is initiated within the mine.
Description
2~91~7 .
REF~ENCE TO ~ELATED APPLICATIQN5 T~i~ application claims the priority o~ German applica-tion Serial No. 40 25 680.4 filed Au~us~ 14th, 1990, which is incorpoxated herein by re~erence.
BACKGROUND OF ~HE INVE~r~O~
Th~ present invention rela~es to a ~o~ne ¢ontrol device, ~ore particularly the pre~ent invention relates to ~n arrange~De1nt wherein the detonation and saf~ty de~ic~ o~ an explosive ~ine can be programmed via an electronic unit which is disposed in the interior of the mine housing and which is controllabl~ from outside the mine housing.
In order to increase tactical flexibility during the use of prior art mines of this type, it i~ necessary to presat their active or waiting time before they are laid. To increase th~ efficiency of a mine barrier established wi~h such mines, it ~ 8 further desirable to feed into the ~ine or mines, before they are laid, parameters reg~rdi~g their respon~e behav~or upon the detection of a target or during mine sweeping measures. Such data are customarily trans-mitted to and fed in manually or wi~hout ¢ontact to each ~ineduring the laying process or when ~hey are activa~ed.
- - . ., . . , .. . . . . . . . . . . ~ .
--` 20~912 ~
German Patent No. 3,843,476 disclo~e~ a devica ~or the inductive, non-contact program~ing of a mlne by ~eans of a programminq device. In ~his device, a ~o-called programming finger co~posed o~ a magnetic cor~ and a tran6~itting co~l surrounding the core i~ inserted into a bllnd bore-like opening in a mine hou~ing. V~a ~ rece~ving coil, which surround~ the blln~ bore in ~he lnterior o~ ~he ~ine and whi~h ~ connected wi~h an electronic unit in the ~ine, i~ i8 possible to inductively coupls .he programming d~lce to the mine itself so that energy and data can be transerred in th~s way from the prsgra~ming device to the electronic detonation and cafety unit provided in the ~ine.
Since, in the device according to Ger~an Patent No. - -3,843,476, extraneous (inter~ering) ~agnetic fields are to be without influence on the recei~ing coil in the interior of the mine, the use o~ a programm~ng device i~ ab~olutely necessary to program one or ~everal mine~. ~owever, due to the hlgh costs of 8uch progra~ming device~, th~y are not ~lways available ln ~ny de~ired nu2ber ~t tho location of use. Consequently, upon the ~alfunction of a pr~gramming device, possibly during a progra~ing proces~ t~at has not y~t been co~pleted, no further ~ine or mines can be programmed until a new operational program~;ng devic~
available.
. . . . . . , , . . , ,, , , , . , ,, , ,, , , _ ,, , ~ , ... . . .
20~912~
~ ~ Y OF THE INVENTI~
It is therefore ~n ob~ect of ~he lnvent~on to provide an easily manlpula~, economic~l device ~or the progra~med control of ~ines while avoid~ng the ~xpensiYe progra~ming device.
The above ob~ect gensrally i~ achiev~d according to th~
present invention by an e~plo~ive ~ine which omprises: a mine housing having an exterior wall with an ~nwardly ~- directed pro~ection provided with A bl~nd bore-lik~ opening ex~ending into the projection fro~ an outer ~urface sf the wall; a progra~mable detonation and ~afety control unit disposed in the mine hou~ing; a pin having ~ predetermined desired ~agnetic perm~ability removeably di~posed in tha openin~; and electronia circult me~n~, disposed within the mine housing and controllabl2 by the ~agnetic permeability of the pin, for programming the detonation and .~fety control unit, w~th the circuit means ~ncluding a read-only memory having its output connected to the deton~tion and ~a~ety de~ice and containing a plurality of diglt~l infor~ations, each ~tored at a ixed different addr~ or progra~ming tha detonation and safety contxol unit, a ~ariable osc~llator having an oscillator rs~onan~ ~reguency determining coil, with ~he coil ~urrounding ~t least a por~ion og ~he exten-sion, whereby the inductance o~ the coil is a *unction of the ,, ' ' ' ' ' ' ' ' - - ' .
` 20~91~7 permeability o~ the pin, and ~urther circuit means, respon-sive to the output ~rsquency of th~ oscillator, for producing an addres~ signal for th~ read-only ~e~ory corre~ponding to the part~cular output frequency o~ the oscillator, and for f2ed~ng the ~ddress signal ~o the read-only ~e~ory to cause the information ~tored at the addres~ to be read out and program the detonation ~nd safQty control unit.
Preferably, the further circuit means includes a frequency to voltage converter con~ected to the output of the oscillator ~or producing an analog output voltage correspond-ing ~o the output frequency of ~h~ oscillator, an analog to d~gital converter, connected to ~he output of the frequency to voltage co~verter, for converting the analoq output voltage to a digital ~ignal corresponding to the output frequency, and a frequency to addres~ memory for producing a particular addre~s ~ignal for the read-only nemory cor-respond~ng to a parti~ular value of th~ output frequency of th~ oscill~tor.
The parti~ul~r a~vant~ge of the ~rr~ngement according to the invention lies in that all data required ~or controlling the mine are already available in the mine as individual information, and the simple insertion of a small pin enables the desired individu~l information to b~ called up directly and reliably.
... .. ... . . .. .. .. . . . . . ... . . . . .. .. . . . . ....
204~12 ~
The p~n~ them~elves ~ay be carrled in large number~ by each indiYidual operator 80 that a few operators, possibly operatlng in parallel, are able to program ~ large number of min0~ w~thln a short period of time.
As an advantageou~ feature of the lnv¢ntion, the pin according to the invention can be ~anu~actured v~ry easily so that ~a88 production i8 al~o po85ible. Since, accsrding to the invention, the desired characteristics of the p~n can be set directly by ~he ~aterial compo~i~io~ and/or its geometry, many possible con~igurations are available at low manufactur-ing C08tS.
As an additional advantageous feature of the invention, an arrangement i~ provided whereby the pin can be reliably retained in the mlne for a desired per~cd of time.
~he invention w~ll be explained and described below in gxeater detail with reference to the drawing fi~ures.
~BI~ DES~RIpTION QE_T~2_~R~WIN&S
C Figure 1 is a ~chematic ~llu~trat~on, i~cludinq a schematic representation o~ an electroni~ circuit, of a preferred embodiment of the device according to the~nvention.
Figures 2a and 2b each show a further embodiment of a pin according to the invention.
.. .. ~ , . .... . .. . . . ..
20~9127 DETAILE~ D~SCRIPrION OF THE PREFEMED ~MK~DIMXNT
lurnirlg now to Figure 1, there ~8 shown a device 10 f`or the control of mine~ which includes a blind bore-like opening 14 provided in ~n inw~rdly extending pro~ection 15 of 5 asa exterior wall ol~ ~ mine housing 12 and serving to accom-moda'ce a pin 16 and a ball 18 fastened to the pin 16. The blind bore-like opening 1~ is adapted in it~ outlin~ shape or corltour to the outline of pin 16 and the ball 18 fastened C~ thereto, with ball 18 lbeing accommodated almost completely in 10 the blind bore-like opening 14. In order to hold pin 16 and its ball 18 fastened thereto in the blind bore-like opening 14, a holdin~ collar 20, preferably l~lade of an elastic material, is provided as an arresting ~eans on lthe outer ~urface o~ the hou~ing wall 12 in the exit region of the blind bora-like opening 14~ To ensure easy removal, if desired, of pin 16 and ball 18 fastened thereto ~rom the blind ~ore-l~ke opening 14, a ~tring or other gripping device 22 i8 ~ttached to the ball 18 at ~ position so that it extends out o~ the opening 14.
In ths interior of mine housing 12~ at least the portion of the pro~ection 15 into which pin 16 extends is surrounded by ~ coil 24. This coil 24 is connected by electrical ¢onnection~ 17 with an electronic unit 26 likewise provided - in the interior of mine hous1ng 12.
.. . . . .
.. ~
` 204912~
Electronic unit 26 includes a power ~upply 28, for example a battery, ~nd can be activated in a ~nown manner when th~ mine is lald~ Thi~ power supply 2B suppli~s the individual component~ of electronic unit 26 and al80 a detonation and safety control unit (ZUS~) 30 partlally integrated therein. Moreover, mine hou~ing 12 include3 an active unit marked 32 which i8 trigger~d by detonatlon and ~a~ety unit 30 to explode the mine. The sensors customarily ~- includ~d in mines ~or the datonation and safety unit 30 are not the subject of this invention and are therefore not shown.
Electronic unit 26 is composed o zn oscillator 34, a frequency to voltage converter 36, a clock pulse generator 38, an analog/digital converter 40, a frequency/address memory module 42, and a read-only ~e~o~y 44 containing information.
Be~ore the m$ne is laid, information memory 44 already cont~in~ All functions and parameter~ w~ich may be required durinq uæe of the ~ine once it is laid ~n the for~ og infor~ation, e.g., blocks of data, Ii to In~ Each individual information Ii (i - 1, ..., n) ha an associated fixed addres~ Ai (i = 1, ..., n~ so that a desired individual in~ormation Ii can be unequivocally addressed in memory 44 and read out.
2~9127 , ~
The invention utilize~ the realization that, once a pln 16 has been nserted into the ~ore 14, th~ lnductanc~ L sf coil 26 i8 the following, in ~ fir~t approxi~ation:
L - ~4 ~r n2 A
where n is the nu~ber of windings o~ thQ coil, : 1 i8 the length of the coil, A is the cross-sectional are~ o~ the coll;
is the absolute p~rmeability (in a vacuum); and ~r is ths relative permeability in the interior of the coil, with ~r being a function of th~ permeability of pin 16.
Each pin 16 is manufactured of a ~aterial having a predeterminable magnetic permeabllity and i8 preferably produced in a sinterinq proces~ of a mixture of highly permeable and magnetically neutral material.
Since the relative permeability ~r approximately linearly enter~ into the value o~ the inductance L, prscis~
r~
and dl~crete inductance values can be se~ during th~ ~anu~ac-ture of pin 16 ~y way of the ~ixing ratio o~ magneticallyneutral ~o magnetically highly permeable material, wi~h the volume o~ the pins 16 remaining constant in ~ach case.
.. . . . . . . . . .. ... . . . . . . . . .. . . . . . ....
- . ,,; . , . . -, . - ,. : .
; ''-. ' '" ,'. .' -." ' . : ,. .,..,.- '.':'`'`, '`. ,.;, , - 2~9127 ,, A~ shown, coll 24 iB connec~ed to th~ oscillator 34 and fOrm6 part of the frequency deter~ining resonan~ circuit of the osclllator 34. Thus, if after laying c a mine proYided with the devic~ lO according to the invention ~nd with a pin 16 having a desired permeability inserted, oscillAtor 34 i~
turned on by the power ~upply 28, ~fter the sa~ety ti~ has expired, the oscilla or 34 will produce ~ output re onant frequency f~ which is a function of the ~nduct~nce of the coi~ 24 according to the following equation.
fR = (2 ~ n) 1 (C A ~lo l~r where C is the capacitance of the oscillator resonan. circuit and i~ a constant.
The output frequency ~ o~ the oscillator 34 i8 fed to the frequency to voltage converter 36, for ~xampl~ ~n integrator whose time interval is controlled by the clock pulse genera~or 38, to produce an anal~g voltage corre~pond- - -ing to the output frequency fR Of the o~cillator 34. Thi~
analog output voltage corresponding to the resonant frequen-cy fR produced by a certain pin 16, that i~, by ~ cQr~ain permeability of this pin 16, i~ converted in a ~ubsequently connected analog/digital converter 40 into a digital ~gnal characteristi~ of the resonant ~requency fR. Thi~ digi~al-ized value fi for the resonant frequency fR i~ fed to the frequency/addres~ memory 42 to cause an address Ai of read . .
20~127 memory 44 corresponding to the particul~ valué ~i ~ the resonant frequency f~ to be read out oP ~c~ory 42 and ~d to ~emory 44 as an address.
~ith the aid o~ thl~ addre~ A~ whic~ bslongs to ~
S certain value o~ resonant frequency ~, th~ information Ii belonging to this addrecs Ai ln inPor~ation ~emory 44 can be found ~nd read out to the detona~ion and sa~nty aontrol unit 30 to progra~ sa~e and initiate th~ action degined by the ~~ addressed information Ii within the ~ine.
Figures 2a and 2b ~how further embodiments of the pin 16 according to the invention, to illustrate the many po~-sibilities ~or the configuration of such a pin 16.
In addition to the already ~ention~d po~sibil~ty of setting the desir~d ~agnetic permeability Or pin 16 by appropriately configuring its material AS a mixture of highly permeable ~nd magnetically neutral ~atarials, it iB al~o possible to set the desired permeability by a variation in the geometry of ~he per~eable layer. For exampl~ ure 2a shows a pin 16' having a low deslre~ permeabllity by provid-ing the magnetic permeability layer with a tubular configura-tion about the remaining portion of the pin. FigurQ 2b, however, shows an arrangement with a larger per~eable reg~on or pin 16" compared to pin 16 of Figure 1 50 that in this way a pin can be produced which has ~ greater p~rmeability.
" .. , . . . ., . . , . .... . . . . .. ~ . . - . _, - .
- . . - , . ........ . . . ..................... .
. ~ .
204912 ~
~ all 18 and pin 16 Qay be ~ini~hed completely in one manufacturing phas~ or, if ~anufsc~ured ~eparately, m~y be assembled and connac~ed with one another in a ~nown manner.
Ball 18 i8 prePerably for~ed of ~ non-magnetic or magnetically neutral ~aterial.
The inv~ntion now being fully descr$bed, it will be apparent to one of ordinary skill in the art that ~ny changes and modifications can be ~ade thereto without departing fro~
the ~pirit or 8cope 0~ the invention as set forth herein.
... . . . . . . .. . . . . . . . . .
REF~ENCE TO ~ELATED APPLICATIQN5 T~i~ application claims the priority o~ German applica-tion Serial No. 40 25 680.4 filed Au~us~ 14th, 1990, which is incorpoxated herein by re~erence.
BACKGROUND OF ~HE INVE~r~O~
Th~ present invention rela~es to a ~o~ne ¢ontrol device, ~ore particularly the pre~ent invention relates to ~n arrange~De1nt wherein the detonation and saf~ty de~ic~ o~ an explosive ~ine can be programmed via an electronic unit which is disposed in the interior of the mine housing and which is controllabl~ from outside the mine housing.
In order to increase tactical flexibility during the use of prior art mines of this type, it i~ necessary to presat their active or waiting time before they are laid. To increase th~ efficiency of a mine barrier established wi~h such mines, it ~ 8 further desirable to feed into the ~ine or mines, before they are laid, parameters reg~rdi~g their respon~e behav~or upon the detection of a target or during mine sweeping measures. Such data are customarily trans-mitted to and fed in manually or wi~hout ¢ontact to each ~ineduring the laying process or when ~hey are activa~ed.
- - . ., . . , .. . . . . . . . . . . ~ .
--` 20~912 ~
German Patent No. 3,843,476 disclo~e~ a devica ~or the inductive, non-contact program~ing of a mlne by ~eans of a programminq device. In ~his device, a ~o-called programming finger co~posed o~ a magnetic cor~ and a tran6~itting co~l surrounding the core i~ inserted into a bllnd bore-like opening in a mine hou~ing. V~a ~ rece~ving coil, which surround~ the blln~ bore in ~he lnterior o~ ~he ~ine and whi~h ~ connected wi~h an electronic unit in the ~ine, i~ i8 possible to inductively coupls .he programming d~lce to the mine itself so that energy and data can be transerred in th~s way from the prsgra~ming device to the electronic detonation and cafety unit provided in the ~ine.
Since, in the device according to Ger~an Patent No. - -3,843,476, extraneous (inter~ering) ~agnetic fields are to be without influence on the recei~ing coil in the interior of the mine, the use o~ a programm~ng device i~ ab~olutely necessary to program one or ~everal mine~. ~owever, due to the hlgh costs of 8uch progra~ming device~, th~y are not ~lways available ln ~ny de~ired nu2ber ~t tho location of use. Consequently, upon the ~alfunction of a pr~gramming device, possibly during a progra~ing proces~ t~at has not y~t been co~pleted, no further ~ine or mines can be programmed until a new operational program~;ng devic~
available.
. . . . . . , , . . , ,, , , , . , ,, , ,, , , _ ,, , ~ , ... . . .
20~912~
~ ~ Y OF THE INVENTI~
It is therefore ~n ob~ect of ~he lnvent~on to provide an easily manlpula~, economic~l device ~or the progra~med control of ~ines while avoid~ng the ~xpensiYe progra~ming device.
The above ob~ect gensrally i~ achiev~d according to th~
present invention by an e~plo~ive ~ine which omprises: a mine housing having an exterior wall with an ~nwardly ~- directed pro~ection provided with A bl~nd bore-lik~ opening ex~ending into the projection fro~ an outer ~urface sf the wall; a progra~mable detonation and ~afety control unit disposed in the mine hou~ing; a pin having ~ predetermined desired ~agnetic perm~ability removeably di~posed in tha openin~; and electronia circult me~n~, disposed within the mine housing and controllabl2 by the ~agnetic permeability of the pin, for programming the detonation and .~fety control unit, w~th the circuit means ~ncluding a read-only memory having its output connected to the deton~tion and ~a~ety de~ice and containing a plurality of diglt~l infor~ations, each ~tored at a ixed different addr~ or progra~ming tha detonation and safety contxol unit, a ~ariable osc~llator having an oscillator rs~onan~ ~reguency determining coil, with ~he coil ~urrounding ~t least a por~ion og ~he exten-sion, whereby the inductance o~ the coil is a *unction of the ,, ' ' ' ' ' ' ' ' - - ' .
` 20~91~7 permeability o~ the pin, and ~urther circuit means, respon-sive to the output ~rsquency of th~ oscillator, for producing an addres~ signal for th~ read-only ~e~ory corre~ponding to the part~cular output frequency o~ the oscillator, and for f2ed~ng the ~ddress signal ~o the read-only ~e~ory to cause the information ~tored at the addres~ to be read out and program the detonation ~nd safQty control unit.
Preferably, the further circuit means includes a frequency to voltage converter con~ected to the output of the oscillator ~or producing an analog output voltage correspond-ing ~o the output frequency of ~h~ oscillator, an analog to d~gital converter, connected to ~he output of the frequency to voltage co~verter, for converting the analoq output voltage to a digital ~ignal corresponding to the output frequency, and a frequency to addres~ memory for producing a particular addre~s ~ignal for the read-only nemory cor-respond~ng to a parti~ular value of th~ output frequency of th~ oscill~tor.
The parti~ul~r a~vant~ge of the ~rr~ngement according to the invention lies in that all data required ~or controlling the mine are already available in the mine as individual information, and the simple insertion of a small pin enables the desired individu~l information to b~ called up directly and reliably.
... .. ... . . .. .. .. . . . . . ... . . . . .. .. . . . . ....
204~12 ~
The p~n~ them~elves ~ay be carrled in large number~ by each indiYidual operator 80 that a few operators, possibly operatlng in parallel, are able to program ~ large number of min0~ w~thln a short period of time.
As an advantageou~ feature of the lnv¢ntion, the pin according to the invention can be ~anu~actured v~ry easily so that ~a88 production i8 al~o po85ible. Since, accsrding to the invention, the desired characteristics of the p~n can be set directly by ~he ~aterial compo~i~io~ and/or its geometry, many possible con~igurations are available at low manufactur-ing C08tS.
As an additional advantageous feature of the invention, an arrangement i~ provided whereby the pin can be reliably retained in the mlne for a desired per~cd of time.
~he invention w~ll be explained and described below in gxeater detail with reference to the drawing fi~ures.
~BI~ DES~RIpTION QE_T~2_~R~WIN&S
C Figure 1 is a ~chematic ~llu~trat~on, i~cludinq a schematic representation o~ an electroni~ circuit, of a preferred embodiment of the device according to the~nvention.
Figures 2a and 2b each show a further embodiment of a pin according to the invention.
.. .. ~ , . .... . .. . . . ..
20~9127 DETAILE~ D~SCRIPrION OF THE PREFEMED ~MK~DIMXNT
lurnirlg now to Figure 1, there ~8 shown a device 10 f`or the control of mine~ which includes a blind bore-like opening 14 provided in ~n inw~rdly extending pro~ection 15 of 5 asa exterior wall ol~ ~ mine housing 12 and serving to accom-moda'ce a pin 16 and a ball 18 fastened to the pin 16. The blind bore-like opening 1~ is adapted in it~ outlin~ shape or corltour to the outline of pin 16 and the ball 18 fastened C~ thereto, with ball 18 lbeing accommodated almost completely in 10 the blind bore-like opening 14. In order to hold pin 16 and its ball 18 fastened thereto in the blind bore-like opening 14, a holdin~ collar 20, preferably l~lade of an elastic material, is provided as an arresting ~eans on lthe outer ~urface o~ the hou~ing wall 12 in the exit region of the blind bora-like opening 14~ To ensure easy removal, if desired, of pin 16 and ball 18 fastened thereto ~rom the blind ~ore-l~ke opening 14, a ~tring or other gripping device 22 i8 ~ttached to the ball 18 at ~ position so that it extends out o~ the opening 14.
In ths interior of mine housing 12~ at least the portion of the pro~ection 15 into which pin 16 extends is surrounded by ~ coil 24. This coil 24 is connected by electrical ¢onnection~ 17 with an electronic unit 26 likewise provided - in the interior of mine hous1ng 12.
.. . . . .
.. ~
` 204912~
Electronic unit 26 includes a power ~upply 28, for example a battery, ~nd can be activated in a ~nown manner when th~ mine is lald~ Thi~ power supply 2B suppli~s the individual component~ of electronic unit 26 and al80 a detonation and safety control unit (ZUS~) 30 partlally integrated therein. Moreover, mine hou~ing 12 include3 an active unit marked 32 which i8 trigger~d by detonatlon and ~a~ety unit 30 to explode the mine. The sensors customarily ~- includ~d in mines ~or the datonation and safety unit 30 are not the subject of this invention and are therefore not shown.
Electronic unit 26 is composed o zn oscillator 34, a frequency to voltage converter 36, a clock pulse generator 38, an analog/digital converter 40, a frequency/address memory module 42, and a read-only ~e~o~y 44 containing information.
Be~ore the m$ne is laid, information memory 44 already cont~in~ All functions and parameter~ w~ich may be required durinq uæe of the ~ine once it is laid ~n the for~ og infor~ation, e.g., blocks of data, Ii to In~ Each individual information Ii (i - 1, ..., n) ha an associated fixed addres~ Ai (i = 1, ..., n~ so that a desired individual in~ormation Ii can be unequivocally addressed in memory 44 and read out.
2~9127 , ~
The invention utilize~ the realization that, once a pln 16 has been nserted into the ~ore 14, th~ lnductanc~ L sf coil 26 i8 the following, in ~ fir~t approxi~ation:
L - ~4 ~r n2 A
where n is the nu~ber of windings o~ thQ coil, : 1 i8 the length of the coil, A is the cross-sectional are~ o~ the coll;
is the absolute p~rmeability (in a vacuum); and ~r is ths relative permeability in the interior of the coil, with ~r being a function of th~ permeability of pin 16.
Each pin 16 is manufactured of a ~aterial having a predeterminable magnetic permeabllity and i8 preferably produced in a sinterinq proces~ of a mixture of highly permeable and magnetically neutral material.
Since the relative permeability ~r approximately linearly enter~ into the value o~ the inductance L, prscis~
r~
and dl~crete inductance values can be se~ during th~ ~anu~ac-ture of pin 16 ~y way of the ~ixing ratio o~ magneticallyneutral ~o magnetically highly permeable material, wi~h the volume o~ the pins 16 remaining constant in ~ach case.
.. . . . . . . . . .. ... . . . . . . . . .. . . . . . ....
- . ,,; . , . . -, . - ,. : .
; ''-. ' '" ,'. .' -." ' . : ,. .,..,.- '.':'`'`, '`. ,.;, , - 2~9127 ,, A~ shown, coll 24 iB connec~ed to th~ oscillator 34 and fOrm6 part of the frequency deter~ining resonan~ circuit of the osclllator 34. Thus, if after laying c a mine proYided with the devic~ lO according to the invention ~nd with a pin 16 having a desired permeability inserted, oscillAtor 34 i~
turned on by the power ~upply 28, ~fter the sa~ety ti~ has expired, the oscilla or 34 will produce ~ output re onant frequency f~ which is a function of the ~nduct~nce of the coi~ 24 according to the following equation.
fR = (2 ~ n) 1 (C A ~lo l~r where C is the capacitance of the oscillator resonan. circuit and i~ a constant.
The output frequency ~ o~ the oscillator 34 i8 fed to the frequency to voltage converter 36, for ~xampl~ ~n integrator whose time interval is controlled by the clock pulse genera~or 38, to produce an anal~g voltage corre~pond- - -ing to the output frequency fR Of the o~cillator 34. Thi~
analog output voltage corresponding to the resonant frequen-cy fR produced by a certain pin 16, that i~, by ~ cQr~ain permeability of this pin 16, i~ converted in a ~ubsequently connected analog/digital converter 40 into a digital ~gnal characteristi~ of the resonant ~requency fR. Thi~ digi~al-ized value fi for the resonant frequency fR i~ fed to the frequency/addres~ memory 42 to cause an address Ai of read . .
20~127 memory 44 corresponding to the particul~ valué ~i ~ the resonant frequency f~ to be read out oP ~c~ory 42 and ~d to ~emory 44 as an address.
~ith the aid o~ thl~ addre~ A~ whic~ bslongs to ~
S certain value o~ resonant frequency ~, th~ information Ii belonging to this addrecs Ai ln inPor~ation ~emory 44 can be found ~nd read out to the detona~ion and sa~nty aontrol unit 30 to progra~ sa~e and initiate th~ action degined by the ~~ addressed information Ii within the ~ine.
Figures 2a and 2b ~how further embodiments of the pin 16 according to the invention, to illustrate the many po~-sibilities ~or the configuration of such a pin 16.
In addition to the already ~ention~d po~sibil~ty of setting the desir~d ~agnetic permeability Or pin 16 by appropriately configuring its material AS a mixture of highly permeable ~nd magnetically neutral ~atarials, it iB al~o possible to set the desired permeability by a variation in the geometry of ~he per~eable layer. For exampl~ ure 2a shows a pin 16' having a low deslre~ permeabllity by provid-ing the magnetic permeability layer with a tubular configura-tion about the remaining portion of the pin. FigurQ 2b, however, shows an arrangement with a larger per~eable reg~on or pin 16" compared to pin 16 of Figure 1 50 that in this way a pin can be produced which has ~ greater p~rmeability.
" .. , . . . ., . . , . .... . . . . .. ~ . . - . _, - .
- . . - , . ........ . . . ..................... .
. ~ .
204912 ~
~ all 18 and pin 16 Qay be ~ini~hed completely in one manufacturing phas~ or, if ~anufsc~ured ~eparately, m~y be assembled and connac~ed with one another in a ~nown manner.
Ball 18 i8 prePerably for~ed of ~ non-magnetic or magnetically neutral ~aterial.
The inv~ntion now being fully descr$bed, it will be apparent to one of ordinary skill in the art that ~ny changes and modifications can be ~ade thereto without departing fro~
the ~pirit or 8cope 0~ the invention as set forth herein.
... . . . . . . .. . . . . . . . . .
Claims (12)
1. An explosive mine comprising: a mine housing having an exterior wall with an inwardly directed projection provided with a blind bore-like opening extending into said projection from an outer surface of said wall; a programmable detonation and safety control unit disposed in said mine housing; a pin having a predetermined desired magnetic permeability removeably disposed in said opening; and electronic circuit means, disposed within said mine housing and controllable by the magnetic permeability of said pin, for programming said detonation and safety control unit, said circuit means including a read-only memory having its output connected to said detonation and safety device and containing a plurality of digital informations, each stored at a fixed different address, for programming said detonation and safety device, a variable oscillator having an oscillator resonant frequency determining coil, with said coil surrounding at least a portion of said extension, whereby the inductance of said coil is a function of the permeability of said pin, and further circuit means, responsive to the output frequency of said oscillator, for producing an address signal for said read-only memory corresponding to the particular output frequency of said oscillator, and for feeding said address signal to said read-only memory to cause the information stored at the address to be read out and program said detonation and safety device.
2. A mine as defined in claim 1 wherein said fur her circuit means includes: a frequency to voltage converter connected to the output of said oscillator for producing an analog output voltage corresponding to the output freguency of said oscillator; an analog to digital converter, connected to the output of said frequency to voltage converter, for converting the analog output voltage to a digital signal corresponding to the output frequency; and a frequency to address memory for producing a particular address signal for said read-only memory corresponding to a particular value of said output frequency of said oscillator.
3. A mine as defined in claim 1, wherein said pin is a sintered mixture of magnetically highly permeable and magnetically neutral materials.
4. A mine as defined in claim 3, wherein the magnetic permeability of said pin is set by the mixing ratio of permeable to non-permeable material.
5. A mine as defined in claim 4, wherein the magnetic permeability of said pin additionally is set by the geometry of said pin.
6. A mine according to claim 5, wherein said pin includes a tubular layer of magnetically permeability material disposed around a core of non-magnetic material.
7. A mine as defined is claim 1, wherein said pin is attached to a ball, and said opening is configured to accommodate said pin and substantially all of said ball.
8. A mine as defined in claim 7, further comprising elastic means disposed around said opening at the outer surface of said opening for retaining said pin and said ball in said opening.
9. A mine as defined in claim 7, further comprising means, attached to said ball and extending beyond the outer surface of said wall, for facilitating removal of said pin from said opening.
10. A mine as defined in claim 1, further comprising elastic means, disposed at said opening, for retaining said pin in said opening.
11. An explosive mine comprising: a mine housing having an exterior wall with an inwardly directed projection;
a blind bore-like opening which extends into said projection from an outer surface of said wall for receiving a pin having a predetermined desired magnetic permeability; a programmable detonation and safety control unit disposed in said mine housing: and electronic circuit means, disposed within said mine housing, for programming said detonation and safety device, said electronic circuit means including a read-only memory having its output connected to said detonation and safety control unit and containing a plurality of digital informations, each stored at a fixed different address, for programming said detonation and safety device according to selectable functions and parameters, a variable oscillator having an oscillator resonant frequency determining coil, with said coil surrounding at least a portion of said extension, whereby the inductance of said coil is a function of the magnetic permeability of a pin disposed in said opening, and further circuit means, responive to the output frequency of said oscillator, for producing an address signal for said read-only memory corresponding to the particular output frequency of said oscillator, and for feeding said address signal to said read-only memory to cause the informa-tion stored at the address to be read out and program said detonation and safety control unit.
a blind bore-like opening which extends into said projection from an outer surface of said wall for receiving a pin having a predetermined desired magnetic permeability; a programmable detonation and safety control unit disposed in said mine housing: and electronic circuit means, disposed within said mine housing, for programming said detonation and safety device, said electronic circuit means including a read-only memory having its output connected to said detonation and safety control unit and containing a plurality of digital informations, each stored at a fixed different address, for programming said detonation and safety device according to selectable functions and parameters, a variable oscillator having an oscillator resonant frequency determining coil, with said coil surrounding at least a portion of said extension, whereby the inductance of said coil is a function of the magnetic permeability of a pin disposed in said opening, and further circuit means, responive to the output frequency of said oscillator, for producing an address signal for said read-only memory corresponding to the particular output frequency of said oscillator, and for feeding said address signal to said read-only memory to cause the informa-tion stored at the address to be read out and program said detonation and safety control unit.
12. A mine as defined in claim 11; further comprising a pin disposed in said opening and having a predetermined magnetic permeability for producing a desired output frequen-cy from said oscillator associated with a desired address of said read-only memory.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4025680.4 | 1990-08-14 | ||
| DE4025680A DE4025680C1 (en) | 1990-08-14 | 1990-08-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2049127A1 true CA2049127A1 (en) | 1992-02-15 |
Family
ID=6412188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002049127A Abandoned CA2049127A1 (en) | 1990-08-14 | 1991-08-13 | Mine control device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5113766A (en) |
| CA (1) | CA2049127A1 (en) |
| DE (1) | DE4025680C1 (en) |
| FR (1) | FR2665964B1 (en) |
| GB (1) | GB2247067B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2708099B1 (en) * | 1993-07-22 | 1995-09-22 | Giat Ind Sa | Device for detecting an objective by means of a trap wire. |
| FR2730557B1 (en) * | 1995-02-10 | 1997-04-11 | Giat Ind Sa | EXERCISE MINE, PROGRAMMING DEVICE, AND SIMULATION DEVICE IMPLEMENTING SUCH A MINE |
| US5773749A (en) * | 1995-06-07 | 1998-06-30 | Tracor, Inc. | Frequency and voltage dependent multiple payload dispenser |
| SE513820C2 (en) * | 1999-01-28 | 2000-11-06 | Bofors Missiles Ab | Device for recharging energy in an energy storage device |
| US6176168B1 (en) * | 1999-04-29 | 2001-01-23 | Alliant Techsystems Inc. | Transmitter coil, improved fuze setter circuitry for adaptively tuning the fuze setter circuit for resonance and current difference circuitry for interpreting a fuze talkback message |
| DE102010006230A1 (en) * | 2010-01-28 | 2011-08-18 | JUNGHANS Microtec GmbH, 78655 | Electronic circuit and method for determining the impedance |
| CN103984329A (en) * | 2014-05-30 | 2014-08-13 | 常州联力自动化科技有限公司 | Mine equipment wireless controller |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2967481A (en) * | 1945-09-17 | 1961-01-10 | Howard W Semon | Mine arming means |
| US3937124A (en) * | 1974-09-20 | 1976-02-10 | The United States Of America As Represented By The Secretary Of The Army | Settable warhead burst range selector |
| CA1080327A (en) * | 1977-05-02 | 1980-06-24 | Bata Industries Limited | Injection control apparatus |
| US4454815A (en) * | 1981-09-21 | 1984-06-19 | The United States Of America As Represented By The Secretary Of The Army | Reprogrammable electronic fuze |
| US4799429A (en) * | 1984-03-30 | 1989-01-24 | Isc Technologies, Inc. | Programming circuit for individual bomblets in a cluster bomb |
| DE3442456A1 (en) * | 1984-11-22 | 1986-09-04 | Honeywell Gmbh, 6050 Offenbach | Arrangement for programming the fuze of mines |
| DE3625649A1 (en) * | 1986-07-29 | 1988-02-18 | Messerschmitt Boelkow Blohm | ANGLE CODING DEVICE |
| DE3843476C1 (en) * | 1988-12-23 | 1989-10-26 | Honeywell Regelsysteme Gmbh, 6050 Offenbach, De | Programming device for fuzes |
| FR2645636B2 (en) * | 1989-01-27 | 1994-09-02 | Serat | AUTONOMOUS PROGRAMMABLE MINE IGNITER |
-
1990
- 1990-08-14 DE DE4025680A patent/DE4025680C1/de not_active Expired - Lifetime
-
1991
- 1991-06-03 US US07/709,366 patent/US5113766A/en not_active Expired - Fee Related
- 1991-06-20 GB GB9113402A patent/GB2247067B/en not_active Expired - Fee Related
- 1991-07-12 FR FR919108796A patent/FR2665964B1/en not_active Expired - Fee Related
- 1991-08-13 CA CA002049127A patent/CA2049127A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| GB9113402D0 (en) | 1991-08-07 |
| DE4025680C1 (en) | 1991-10-02 |
| FR2665964B1 (en) | 1993-01-22 |
| GB2247067A (en) | 1992-02-19 |
| GB2247067B (en) | 1994-02-02 |
| US5113766A (en) | 1992-05-19 |
| FR2665964A1 (en) | 1992-02-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |